Estimation of distribution coefficient of uranium in soil by batch tests

14th International Conference on Science, Engineering and Technology

自然科学;工业技术

Manoj, S.^1 ; Parimalarenganayaki, S.^2 ; Elango, L.^1

Department of Geology, Anna University, Chennai

600025, India^1

Deparment of Environmental and Water Resources Engineering, School of Civil and Chemical Engineering, VIT University, Vellore

632014, India^2

关键词: Analysis of soils;    Contaminant transport;    Controlling factors;    Distribution coefficient;    Estimation of distributions;    Ion concentrations;    Mineralized zone;    Soil distribution;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/263/3/032016/pdf
DOI  :  10.1088/1757-899X/263/3/032016

来源: IOP

【 摘 要 】

Sorption studies were performed to estimate the soil distribution coefficient (Kd). Since soil and groundwater are major controlling factors for the Kdvalue, it is important to determine the site specific Kdvalue. In this study, special emphasis has been given to soil and groundwater parameters which control the Kdvalue of uranium around the mineralized zone. Based on the analysis of soil sample, the distribution coefficient of uranium around the mineralized zone varies from 7 to 369 l/kg. It is also observed that distribution coefficient of uranium in this region not only depends on the individual parameter and it varies significantly with space. Increase and decrease in Kdvalue was observed when the pH ranges from 4-7 and 7-8.5 respectively which indicates that the increase in pH greater than 7 will reduce the Kdvalue. No significant correlation was observed between the Kdvalue and other parameters such as soil texture, CaCO3, CEC and major ion concentration in groundwater. Determination of Kdvalue in a uranium mineralized zone will be used to predict and model the contaminant transport.